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fix: the dev-server in dev-server.js #672

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fix: the dev-server in dev-server.js #672

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11 changes: 9 additions & 2 deletions dev-server.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,14 @@ import browserify from 'browserify-middleware'
import cssjanus from 'cssjanus'
import { assembleCss } from './scripts/assemble-css'

const rpath = p => pathu.join(__dirname, p)
const rpath = p => {
const safe = pathu.normalize(p).replace(/^(\.\.(\/|\\|$))+/, '')
const resolved = pathu.join(__dirname, safe)
if (!resolved.startsWith(__dirname + pathu.sep) && resolved !== __dirname) {
throw new Error('Invalid path')
}
return resolved
}

const app = express()
const router = express.Router()
Expand Down Expand Up @@ -85,6 +92,6 @@ router.use((req, res) => res.render(rpath('client/index.pug')))

app.use(basePath, router)

app.listen(process.env.PORT || 5000, function(){
app.listen(process.env.PORT || 5000, process.env.HOST || '127.0.0.1', function(){
console.log(`HTTP server running on ${this.address().address}:${this.address().port}`)
})